Wash your hands thoroughly after? Works for me, although I'll still grab a rolled-up newspaper first if there's time.

Gloves?

That's a valid suggestion, but unfortunately wouldn't hide the substance. I think I have separate revulsion to insect contact and insect weight/mass. I'd prefer certain bugs to not touch me (e.g. ladybugs are fine), but I _really_ would prefer them to feel weightless. Something about a bug's weight being perceptible is intensely revolting to me, as if they're meant to be weightless wisps

Two of these then:

https://en.wikipedia.org/wiki/Fly-killing_device#Flyswatter

The fly gun looks like fun too.