Lawnmowers, helicopters, vacuum cleaners, hairdryers.

Although, it does not bug me until I'm flinching from the build up of chinese water torture all over on my nerves and I'm flopping around on the floor like I'm being electrocuted, with a full bore panic attack having the universe rapidly collapse on me over and over, possibly crapping myself too. Very unpleasant.

And worst about it, no one will stop, nor even make any accommodation for me, not even like merely shouting "lawnmower" to warn me when it's starting (or better yet, earlier, to let me get mega-dosed up on thiamine & benfotiamine, minerals, b-vits, cbd, ashvagandha, etc, and get noise cancelling headphones (+working batteries), and go to toilet before driving away out of earshot).