Will this mattress have a new-mattress smell?

Barely, and most people notice nothing. Off-gassing clears in under 7 hours, the fastest in its family, because the comfort layers lean on natural latex and natural-fibre materials that are virtually odorless from the start. The synthetic foam present is CertiPUR-US certified, independently tested for low VOCs. It also arrives delivered flat in a plastic bag rather than compressed and rolled, so it never picks up a concentrated scent. You can put sheets on it the same evening.