What is the real story behind Roy Jones and steroids?

In 2000, Jones tested positive for androstenedione, a testosterone precursor. He claimed that he had taken the substance unknowingly, as it was contained in a nasal decongestant that he was taking. However, the Nevada State Athletic Commission suspended him for six months.

In 2017, Jones tested positive for turinabol, an anabolic steroid. He was banned from boxing for one year.

Roy Jones is my favorite fighter but surely this cannot be ignored if applied to everyone?

What are your honest thoughts on this and what stories have you heard?