Cupcake Failure

Wanted to share a funny story that happened a week or so ago. So, my husband has been wanting some carrot cake, and I don't particularly care for it, but I went and bought a box of carrot cake mix and made cupcakes. When then were done I frosted some and my husband ate one. He said that they weren't very sweet, which I don't think carrot cake is anyway, which is probably why I don't like it! Anyways, the next day, he opened up the container they were in and said they smelled bad! He said they smelled like grease. He asked me what oil I used. Well, we have these glass oil containers you see at like an Italian restaurant, one is for Olive oil and the other is for vegetable oil. I told him I used the vegetable oil, because you don't usually bake with olive oil. He then proceeded to tell me that he poured some old oil/grease in that bottle that we have used for frying!!!!! So he ate some leftover grease!!! Needless to say we threw them away! But, I felt really bad, and so disgusted that he ate grease!! He poured that bottle of oil out and went and bought some more vegetable oil to put in it, so that never happens again! And, I made him a fresh batch this weekend, and he said they tasted A LOT better! Just makes me sick every time I think about him eating that cupcake! GROSS!