It's impolite not to say 'bless you' to someone but... I don't believe in 'bless you'! Because it's short for 'God Bless You' and I don't believe in god. So why has this - a religious sentiment - become like wiping your feet on the mat or keeping you elbows off the table. I even heard once that it meant 'God bless you the devil leave you' because people thought you were sneezing out the devil. Even restarting your heart! I don't believe it but if I don't say it I get death glares...! And there's more too but it's six in the morning and I haven't slept so my pardon if I cant think of any. Ha ha.