disgusting deodorant

I had to go back to university to fetch something.
In the lift someone stood beside me with a very heavy odeur around him.
The smell nearly took my breath and I saw that some people covered their mouth with a handkerchief.

The guy didn't realise what he was causing.
At the next level everyone left and walked to the next lift.
It was like an organised march.

Why do people use that heavy smell?
Do they really feel better than when they use ordinary deodorant?

Do they really thin all girls will come and adore him?