There are several reasons for the "Pardon me." after a sneeze.
You have just inadvertently exposed those around you to your germs, and made a loud disruptive noise, it is only polite to ask pardon.
You may need to excuse yourself to blow your nose, something that is impolite at table or in company, so a "Pardon me." could precede your departure.
And my favorite - It was believed at one time that when you sneeze, your soul momentarily exits your body, if the "devil" is in close attendance he could "slip in to" the vacated body. A "Pardon me." and the common response of "Bless you." was supposed to chase the "devil" away.
I beg your pardon is "je vous demande pardon ?" in French.
Pardon! That actually is how to say pardon. =)
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That they come in threes.
It's very common to hear Canadians say 'Excuse me' or 'Pardon me' when asking someone to repeat themselves. Not many people would say 'excuse you' or 'pardon you' though, that would sound a bit rude.
not all people do..
khoma korun.
Yes, a pardon is NOT an exoneration of guilt, and since it is not an expungement, it will be in their criminal history record.
No. That is a myth.
verb éternuer noun éternuement
To use "i beg your pardon" walk up to someone you do not know and say "i beg your pardon" followed by a question. it is merely said to offer your pardon from interrupting whatever they may be doing and for walking up to them as a stranger.
Excuse me or Pardon me. Sometimes even, "May I please have a tissue/kleenex" (if necessary) after excuse or pardon me.