Perhaps he was implementing this business model:
"He was giving me a foot massage. I didn't see him change gloves so like your hands are in my mouth now my whole mouth is infected."
So, I've got more questions than answers here:
1. You called your husband and told him what was up. He thought it was weird. Yet, you stayed.
2. Are you sure his hands were in your mouth?
3. How funky are your feet that your fillings melted?
P.S. You're supposed to gargle with Listerine, not with a pair of "hairy raisins."