Skin, Voiding, Sneezing, Coughing, Vomiting, Stomach Juices, etc. So many things! :) (even your saliva)
I would not suggest it. Anything can happen on a boat.
Answer:
as the health professional is taking vital signs
Explanation:
when you do vital signs they should ask you what's your name and bate of birth
hope this helps
you can freeze dry it. You can put the food in an air tight bag.