I think Veronica is making me sick

Whenever I'm in my truck with the Heat or AC on for more than 5 minutes my throat itches and I start sneezing. I have horrendous seasonal allergies. I think the HVAC filter is clogged with pollen or something. Can I just wash it out or do I have to replace it. Also, Where would it be in my truck (paging TheLoudMusic).… » 11/23/14 12:30am Today 12:30am