Mommies, yesterday a friend complained about urine smell. She says it …

Mommies, yesterday a friend complained about urine smell. She says it smells strongly throughout the toilet, a sharp odor she says ??‍♀️ I haven't encountered this before, has anyone had such an experience? She says it was like that last year but then it went away. I haven't encountered this before, has anyone had such an experience? What should I suggest?!