> I never saw it, never felt it. Still don't.

I got the same condition for diesel fumes since my military service. Thankfully I remember how dizzy I used to get around fumes but I really have to force myself to avoid fumes now even at the faintest smell since I can endure it ... when people around me start complaining I can't even smell it.

I assume you lived there since childhood and got used to it from that time?