1st hand smoke

Introduction
When a cigarette is lighted, smoke started to diffuse into the air. This is 1st hand smoke.

Problems/"problems"
When a lighted cigarette is not being "consumed" by the smoker, it is polluting the surroundings with 1st hand smoke. ...

Solutions/"solutions"
None yet.

My views
Strictly speaking, smokers mainly inhale filtered 1st hand smoke, and then exhale 2nd hand smoke.

1st hand smoke is probably much more toxic and concentrated than 2nd hand smoke that has gone through the filtering of the cigarette bud, the smoker's lungs, and some of them also the smoker's nostrils. Thus, 2nd hand smoke seems a lesser problem than 1st hand smoke.

Can someone design a filter to cap on to the burning end of a cigarette?