If I have a cold, what precautions should I take while preparing food to make sure that I don't transmit germs?
- Wash your hands thoroughly and frequently. See Clean Hands Save Lives.
- Do not at any point cough into your hands. Coughing into a sleeve is considered less likely to transmit germs.
- To really prevent breathing on your food and potentially transmitting germs that way, you could consider wearing a mask.
Personally I'd consider the last step optional (and the other two not).