What do you think of my idea for solving the problem of too much Nitrogen in our atmosphere?

N is the largest element in our atmosphere. We inhale oxygen everytime we breathe. Someone should do a study which would show how much the N in the atmosphere would be reduced if the entire human population of the earth would all inhale simultaneously, then hold their breath while boarding a space craft. The space craft would then exit earth's atmosphere where everyone would exhale. Each person would have a tank of pure O with them to inhale then come back to earth. Then the process would be repeated until our N level problems are solved. You could probably train some of the smarter monkeys and dogs and maybe a few other animals to join the humans in this process.