I don't want to appear gross, but have a genuine interest in the answer to the following problem:
If 3 people are in a room, and one of them lets out gas, is it possible to:
1) Collect a sample of the gas? If so, how?
2) Test for presence of DNA in the sample? If so, how?
3) Is it possible to collect a large enough sample of the gas to determine which one of the 3 people let out the gas?
If so, how much is required?
Thank you. robert2