The smell made you do it!
I used to love the smell of leaded gasoline. I'd still have a full head of hair if I hadn't inhaled.
“I’ve only made it to 84 years old.”
Statement of fact by you.
“Would probably have been 110 by now if I hadn’t inhaled leaded gasoline.”
Only if you had been born 26 years earlier, assuming the “...by now” part means anything.
Unless you have a time machine.
;-)