I nearly knocked myself out recently.....I wore (literally 2 tiny dabs) of vintage Egoiste edt.
I put the two dabs on my neck and thought nothing of it.
Well........as the hours went by this stuff seemed to go from strength to strength. After about 3 hours it became really unbearable. I had had enough. It made me feel so sick I had to wash it off. God knows what the people around me thought !
I have also crossed the line a few times in the past, wearing Jicky. One spray too many can turn you bertie and induce that dreaded "pickled farts" note. It always makes me laugh the way russian fragrance fans talk about the "poopy" clove note in Jicky.