Does the Modern Series 8" off-gas when first unwrapped?

Hardly at all, and any scent clears within a day. This Serta ships flat-packed in plastic rather than vacuum-compressed, so it never traps the dense odor tightly rolled beds release on opening, and its slim foam profile airs out quickly. The foams are CertiPUR-US certified and independently tested for low VOCs, so the starting smell is minimal. Unpackage it in a room with some airflow and the harmless fresh-foam scent is gone in under 12 hours.