If you sneeze around Jane Lynch, the "Glee" star will MOST LIKELY say "God Bless You" ... which is odd because the actress tells TMZ she's "kind of an atheist."

Just to review ...

"Atheist" = person who doesn't believe in any sort of a god.

"God Bless You" = thing you traditionally say when someone sneezes, in hopes you can convince a supernatural being to "bless" someone who just fired snot out of their nostrils at breakneck speed.

Anyway, this weekend in NYC, Jane told us WHY she still throws the G-word around when someone sneezes ... check it out.