Fragrant foods like curry, spaghetti sauce and fish tacos only smell good when you're eating them. Later that night and the following morning? Not so much. Sometimes a trip through the dishwasher just can't salvage a bowl or a cutting board.
Avoid having your apple contaminated with an onion smell because you didn't clean the cutting board properly. After cleaning your wood cutting board, rub a bit of lemon juice on it to help get rid of garlic, onion, or fish smells.