This summer and last I started feeling the bite of mosquitoes, like, not the itch, but the moment they “bite”. Like a thin shot or a thin plant spike but more than fiberglass. Is there an evolutionary or environmental change to mosquitoes happening, or am I becoming immune to their numbing agent? What’s happening?
Wild guess here, could it be that OP is getting immune to the numbing agent?
No clue, I don’t know what its mechanism of action is. Probably one of the less-likely possibilities though.