The past few days certain foods taste like mold. why is this?

Gastritis: May have gastritis or stomach acid problem may try zantac (ranitidine) 150 twice a day or Prilosec 20 once a days.

Taste and sinus: There are 2 common reasons for a taste problem: 1-sinus infection or 2- allergies. You probably need to be examined by your doctor to tell the difference. The treatment is different for each like antihistamine for allergy and antibiotic for sinusitis.