Do any other old people here remember getting bitten by mosquitos seems like multiple times a day as a child and realize now that they don't remember having a m

Do any other old people here remember getting bitten by mosquitos seems like multiple times a day as a child and realize now that they don't remember having a mosquito bite in the last decade or more? Any plausible idea why that might have happened? I was outside then and I'm still outside now. I tromped through roadside grass for miles this morning and don't seem to have a single insect bite, no ticks, no fleas, no unwelcome passengers. Perhaps related, does anyone know of a cheap little gadget I could buy or build and which would attract and catch the majority of all flying insects here? I don't mean to kill them. I'm wondering what the population is like here. Thanks