[ralfn]

To be consistent we would have to ban cars for the same reason too. At least near where people live or work.

[cassianoleal]

Also many perfumes and colognes. Some can be incredibly overwhelming.

[threatofrain]

No, cars and cigarettes are known to cause far more substantial health effects to those around. By what instinct does one find oneself tempted to compare bad smell to cancer and asthma?