While you've dealt with the potential taboo around using the handicapped toilet, when quite frankly mate, you're not ... I guess it is a trickly extra step to actually raise the issue with someone along the lines of requesting a more comfortable throne in there.
Nasty, very nasty.
Had a tricky situation myself just yesterday when I nipped to the loo for a mid-afternoon dump, and as I scurried into trap 2, the stench coming from a recent occupant of trap 1 was enough to bring tears to the eyes. Still, I was in desperate need myself, so before you could...