Further Education
Would you like to know more about breathalysers? Here on our Further Education page are articles relating to everything from which are the best breathalysers to how they work and what to look for.
Would you like to know more about breathalysers? Here on our Further Education page are articles relating to everything from which are the best breathalysers to how they work and what to look for.
Alcohol breath analyser, commonly known as breathalysers, have been used by police on Australian roads for decades. Since their introduction, the death toll on our roads from drink driving has dropped dramatically. Despite this, some people still choose to drink and drive. This risks not only their own lives but the lives of others as well.
Today’s alcohol breath analyser is a highly technical device. However, people have been trying to develop ways to trick alcohol analyser for as long as they have been used on our roads.
This myth has been doing the rounds for many years. There are two trains of thought on this. Firstly, that the copper in the coin is supposed to “neutralise” the alcohol in your mouth. Secondly, the copper puts a coating on the inside of your mouth that confuses the alcohol analyser. These will both apparently give you a lower BAC reading.
Unfortunately for this myth, the alcohol analyser takes the breath from the lungs, not the mouth. Even if the breath did come from the mouth, the copper would not affect alcohol levels. The metal used in currency does not contain enough actual copper. There is also no “coating” created by putting a coin in your mouth. Also, the police officer would surely notice the coin and require you to spit it out.
Another common myth is that taking a swig of mouthwash or sucking a mint will confuse the alcohol analyser. The modern alcohol breath analyser is not affected in any way by minty fresh breath. In fact, as some mouthwash contains alcohol, it may increase your reading. The only thing that gum, mouthwash, or mints will do is mask the smell of alcohol on your breath.
Mouthwash and some medicines can, in some instances, give false positives in people who have not been drinking. This Is usually at a very low level. However, this will generally not affect your driving.
Eating strong-smelling foods such as garlic to fool alcohol analyser is another myth. All this will do is give you bad breath. Besides, it may make you burp. Burps are gas from your stomach, which may contain alcohol which may increase your breath test results. Eating food will slow down your metabolism of alcohol. This will slow down its absorption in the body. Yet, it will all end up in your bloodstream and will be able to be tested in your breath.
Eating high absorbent items has been touted as a secret weapon against alcohol analysers. Examples include toilet paper, fabric, charcoal pills, and believe it or not faeces. This is a silly thing to do as it will likely make you sick and/or blocked up. It will not work. Filling your stomach with absorbent material may soak up some alcohol. But it will do nothing for the alcohol metabolized into your bloodstream.
Coffee will also not affect your BAC reading. It may make you feel soberer in the short term but will not influence the alcohol analyser.
There is a belief that is smoking a cigarette just before a breath test will lower the result. In fact, the opposite is true. This is why a police officer will wait to test you if you have just smoked. When a cigarette burns, the sugars added to the tobacco create a chemical called acetaldehyde. This chemical is what is measured by the newer fuel cell analyser. These devices look for how much ethanol has been oxidised into acetaldehyde by the internal electrode. The chemical released into your lungs by the cigarette will likely make your BAC higher.
This chemical is present in the lungs of smokers at a much higher level than non-smokers. This means that some semi-conductor analyser may be affected by it. Professional grade analyser such as the BACtrack S80 Pro is not influenced by this.
This is another myth that will not go your way. Holding your breath inside the lungs that are full of alcohol will only increase the level of alcohol in your breath. This will give you a higher reading on an alcohol analyser. Additionally, studies have shown that holding your breath can actually increase your BAC up to 20%.
This is the one myth that actually has some merit. Different groups have done various studies. The results show that you can decrease your BAC between 10% up to 23% with hyperventilation or heavy exercise. This can be enough to move someone who is just over the limit to just under it. Hyperventilating can work because you are essentially replacing all the air in your lungs with fresh air very quickly. You need to do the breath alcohol analysis quite quickly, however, as this new air will soon pick up the alcohol in your bloodstream and you will have to start over again.
For this system to work, you need to hyperventilate rapidly, then take a deep breath and blow into the Alcohol analyser straight away. The downside of this is that the police officer is bound to notice your irregular breathing, and you will end up feeling very light headed and maybe a bit foolish. The officer will also likely have you do another test without hyperventilating first.
Another breathing system that is believed of tricking an analyser is not breathing out a proper full breath when tested. As the highest alcohol reading is in the deep lung breath, the theory is that you stop the breath before reaching this air. By ending your breath early, you can trick some analyser into doing an early reading by slowly tapering it off.
Professional Grade analyser such as the BACtrack S80 Pro requires a long steady breath. This means that they will register an incomplete reading if the breath is not strong or deep enough. Additionally, the air pump technology in BACtrack Professional grade analyser provides an accurate reading with only a small amount of breath. Therefore, this makes them virtually impossible to trick in this way. Even in the analyser that can be occasionally tricked by this method, the drop in BAC is only around 0.014%.
The only way to guarantee that you will pass a breath test every time is not to drink and drive. If you do plan on drinking, make a plan. For example, have a designated driver, book a cab or an Uber, or stay the night if this is possible. Not only will this keep you and your friends and family safe, but it will also prevent you from killing or injuring strangers all for a fun night out.