I just can't believe some clients are so oblivious to their own lack of personal hygiene. I always wonder what their partners must think!!
I always leave wipes, and 99% of clients are really thorough with them. I do get the odd smelly one, but I'm not squeamish, I just crack on. (no pun intended lol).
I have thought about getting feminine deodorant for them to use too. Which would just mask any whiffs. So that may be an option for anyone squeamish with smells.
It is a really awkward situation, and there is no easy way around it. You dot want to offend anyone, and it's only a natural body function. But it's also something no one else should be subjected to!