chemicals in tobacco smoke Compound Interest: The Cigarette & Their Effects What's in a cigarette? -

And yes you can turn them off when you want to keep things discreet

Public Health 66 , 1604465 (2021)

However, it's important to keep expectations in check: Often luxury brands are tightly controlled, which means that labels like Chanel and Christian Dior have similar price points regardless of where they're sold and are rarely, if ever, marked down, according to Kevin Rozario of Duty Free News International

Immediately after kernel is taken out, it is boiled with sufficient water at high temperature for 12 h

Your best bet here is to use professional cleaning chemicals targeted to deal with smoke odors

You might also experience cough, fever, and loss of taste or smell