<human>: Is it true that you shouldn't use the same towel twice?
<bot>: Yes, it is true that you should not use the same towel twice. Toxic chemicals can be released into the air when a wet towel is dried and reused. The EPA recommends using clean water to wash towels and air drying them to reduce the release of toxic chemicals. So it is best to always use a clean new towel for each use.