In total , 16 . 6 % of search terms had significant increases in relative search volume during the COVID - 19 period , with the largest percentage increase for %22 can ' t smell %22 ( 124 . 4 % , p = . 006 ) , followed by %22 allergies %22 ( 30 . 3 % , p = . 03 ) , %22 voice pain %22 ( 26 . 1