Harry Styles
Most people are already aware that Harry Styles was part of the popular band One Direction before embarking on his own successful solo career. When you live and tour with a group of individuals, it's difficult to get any closer to them than that.
In previous interviews, Zayn Malik mentioned that Harry Styles had notably odorous shoes, and even went so far as to say he couldn't be persuaded to smell the singer's socks. Furthermore, Harry's ex-girlfriend Taylor Swift also made remarks about his oral hygiene.
