How to cheat breathalyzer? Are there ways to cheat the breathalyzer?
As we wrote in one of the previous articles on Vodi.su, a pre-trip breathalyzer is a complex measuring device that determines the percentage of ethyl alcohol vapor in exhaled air.
The measurement error of professional breathalyzers should not exceed 0,02 ppm.
And the sensor itself works according to a rather complicated principle:
- semiconductor - alcohol molecules settle on the conductor, thereby increasing the current resistance;
- electrochemical - the percentage of alcohol is determined by an oxidative reaction in the presence of a catalyst;
- infrared - spectrograph, tuned to the absorption wave of ethanol molecules.
Many drivers have a question is it possible to cheat a breathalyzer?
Try to understand.
How to deceive the breathalyzer?
At the moment, only one really working method is known. This is the ventilation of the lungs before you blow into the tube.
Why does it work?
Alcohol is found in the blood. Venous blood enters the lungs and is filled with oxygen in order to travel further through the arteries and capillaries. We exhale alcohol vapors together with carbon dioxide.
Accordingly, if you ventilate the lungs well, take a few deep breaths and exhale, then for a short time the content of alcohol vapor in the exhaled air will decrease. But very little.
So, simple measurements show that after drinking a glass of champagne or a bottle of beer, the ethanol content rises from 0,16 to 0,25-0,3 ppm. If you take deep breaths and breaths, then this figure will be 0,2-0,24, that is, it will decrease by 0,05-0,06 ppm.
From this we draw the following conclusions:
- lung ventilation is needed to briefly deceive the breathalyzer (that is, if you are forced to blow once);
- it is necessary to blow out the lungs imperceptibly, otherwise the inspector will guess everything;
- the alcohol content decreases slightly.
Conclusion: this method will help you if you drank a bottle of beer or a glass of weak wine. If a person took half a liter on his chest without snacks and washed it all down with beer, then no hyperventilation will help - even from the fume it will be possible to determine that the person is drunk, and from a great distance.
Other ways to cheat breathalyzer
In principle, it would be possible to end the article here, because the breathalyzer analyzes the air and finds ethanol molecules in it. All the other smells with which drivers try to kill the fume are indifferent to the breathalyzer.
Accordingly, neither chewing gum, nor seeds, nor anti-police or mouth spray can help, since ethanol molecules enter the lungs from the blood.
Many drivers praise the following, in their opinion, successful methods to deceive a breathalyzer:
- chewing tea or coffee beans;
- eating chocolate;
- consumption of sweet water;
- mints, candies "Barberry" and so on.
All this will help you only hide the smell. You can, for example, eat garlic or onions - they will certainly block the smell, especially since traffic rules do not prohibit eating garlic. If your behavior does not betray that you have recently been drinking, then the inspector will not have any suspicions and he will let you go with God.
However, even if you chew on a pack of mint gum at one time, it won't help get rid of the ethanol molecules in your breath.
There are legends that sunflower oil hides the smell very well. It really is. If you drink 50-70 milliliters of oil before drinking, you can get drunk not so quickly, because a film forms on the walls of the stomach. Only sooner or later alcohol will still enter the bloodstream. So sunflower oil is also not able to help you.
The only way left is to deceive the inspector. You can blow past the tube or pretend to blow. Perhaps some inexperienced beginner will buy, but this happens very, very rarely. In addition, most testers have a function such as "Anti-deception", which regulates the volume of exhaled air.
Conclusions
It is impossible to deceive a professional breathalyzer.
Deep inhalations and exhalations will only help if you drink little. All other ways are fairy tales for novice drivers. Therefore, the editorial board of the Vodi.su portal advises not to drive even after drinking a bottle of beer. Wait until the alcohol wears off after an hour or two, and you can safely drive on.
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