never heard of 2nd hand perfume, 2nd hand bad breathe,2nd hand sweat, effecting people's health to the extent that one can die from exposure as does 2nd hand smoke!

I have, with perfume. Allergic anaphylaxis.

http://whatallergy.com/2012-02/please-dont-wear-perfume

http://www.examiner.com/article/perfume-allergies-can-be-the-sweet-smell-of-death

assault by perfume spray with a close to fatal outcome (PDF)

The likelihood of damage is probably less than with second-hand smoke, but when it happens it's a hell of a lot more dramatic.