Yep! In fact, if you want to use "bless you" in a religious context, "будьте здорові" will not work. Будьте здорові is what we say if someone sneezes. It literally means "Be healthy". Read my other message in this thread though, because in this form it used only formally (or in plural).

"Будьте здорові!" is for "ви", so can be used addressing a person with whom you would normally use the formal "ви"; or when addressing a group of people in an unlikely event they all sneezed together.

"Будь здоровий" - male, "ти" form

"Будь здорова" - female, "ти" form