Strange Smell in Nose after laughing, sneezing or coughing hard.

[HilluGurl]

Basically for a year or so now every time I laugh hard, sneeze hard or cough hard I get a strange smell in my nose.  I cannot describe it other than possibly a metallic smell.  I don't think I taste anything, just smell it.  It usually lasts for a few hours, getting less and less as time goes by.

If anyone has any ideas or knows what this is please share.  It really bothers me and I would love to figure out what the issue is and hopefully be rid of it someday.

Thanks much.