The atmosphere on the earth is mostly nitrogen, in a sealed environment if you were to remove the oxygen from the atmosphere in 30 minutes what would the symptoms be?
I think the usual trope is clutching at throats or being suffocated however I think that either or both of the following would happen
- A rapid decline in cognitive abilities followed by unconsciousness
- Symptoms of altitude sickness, hyperventilation, nausea, and exhaustion
Can anyone provide any sources?
Note: Atmospheric pressure would be kept constant, back filling the missing oxygen with more nitrogen.