Oops, it doesn't look like 'sniff ya coworkers chair day' is a national day..

Other days

Polyamory Day

Offer Day

Boba Day

Eat What You Want Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Tell Ur Crush You Like Them Day

Lisp Day

Ponytail Day

Get Funky Day

Unicorn Day