The world has become bitter against smokers.However, many people like smoking and can't quit smoking.You might be one of such people. So, what if you got stinky in your mouth if you smoked or broke the "non-smoking promise"?? Very stinky breath will go out from your mouth,and all the people around you, the professors , friends, family members ,and also boy/girl friends.Then you will get so alone....
We are growing E.coli or bacterias which express the enzyme that reacts Dioxine and catalyzes a smelling substract.
Why don't we do it in the road?
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