On Apollo 13, after the accident, the margins for propellent were so low that the astronauts had to drink very little. Nasa was afraid that venting the pee woul

On Apollo 13, after the accident, the margins for propellent were so low that the astronauts had to drink very little. Nasa was afraid that venting the pee would set their trajectory off course. One of the astronauts got an infection from dehydration as a result.