The best replacement for smell is taste.

The best alternatives to smell are rated as following:
★★★★★  taste
★★★  odor
★★  scent
★★  shed
★  taste science fair projects
★  aroma
★  stink
★  taste experiments
★  taste metal
★  fragrance
★  sense of taste
★  taste experiment
★  taste science project
★  taste anything
★  odour
  sniff
  sight
  taste when i have a cold
  smelling
  human smell
  goose down smell
  smells
  fumes
  olfaction
  sent

Your alternative for smell is not listed? Suggest!
Speaking about smell, one probably shouldn't forget about yeast infection.

Other search terms related to smell and their ratings are:
★★★★★ yeast infection
★★★★ taste
★★★★ vaporizer
★★★ front load washer
★★★ sinus infection
★★ smoke
★★ discharge
★ urine
★ cigarette
★ farting
You have in mind a companion for smell and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of smell in all years. Click on graph for more.
smell
taste
odor