I once spent endless hours pulling head lice eggsacs off the long beautiful hairs of my girlfriend while we were ending our 6 month trip in Mexico.
If she would have been just a little less cute, she would still have them.
I did nnot have any problems with bug infestations nor mold in my van but then, I took a couple trips a year to the desert. They had to be ready for sub-zero (Montana), damp and wet (Seattle), and hot and dry (Moab).