How much do Helix Sleep mattresses smell? How strong is their odor?
Share your experience with Helix Sleep's off-gassing reduction
Tuck.com's review of Helix Sleep mattresses noted some initial order. They scored their off-gassing factor as Good (below Very Good and Excellent) and said, "Helix Sleep mattresses typically produce a small amount of off-gassing that usually dissipates within a couple of days."
Sleep Like the Dead's review rated Helix's mattresses between a B and B- for "No Initial Smell" category and said, "Less than 5% of owners (1 in 20) report a significant and enduring unpleasant initial odor."