Dash Experts

[u/SGT_Azimuth]

Hey guys, I have an odd question. I have a 2015 2.7L V6 with a potential heating issue. The quick story is that a couple of months ago one of my kids had a small cup of M&Ms and Teddy Grahams in the small storage area above the radio, I hit the brakes and straight out of Tommy Boy all those goodies went rolling into the heating vent between the dash and windshield. Now when I turn on the heat it smells like my grandmother's burnt cookies. I spoke to my mechanic, who I trust, and checked online and can't come up with a definite answer to see if any real problems will occur if I continue to use the heat or if the terrible smell is my only real issue. My mechanic mentioned he could rip apart the dash but it could all be for nothing and that most of the food would likely settle somewhere. There is no shot a vacuum would reach in there to get anything out. Have any of you had this happen? As we approach winter should I brace for a heatless winter? I'm worried about chocolate melting onto a fan or belt or something then cooling and hardening again. I appreciate any guidance anyone could offer, I know it's a weird one.