Outdoor odor stuck to hair

For the last year or so I’ve noticed a change in the way my hair smells. Once it starts to get warm my hair picks up all of the odors outside. My hair constantly. smells like “outside” if that makes sense. I use purology shampoo, conditioner, leave in conditioner, then follow up with diffuser and hair oil. I can’t wash my hair daily because it drys it out. Has anyone found a fix for this? Does it have to do with the porosity of my hair? I have wavy sort of frizzy hair that I color every 8 weeks or so.