If nitrous oxide induces emesis, maybe 100% oxygen is an antiemetic.
Overdyk
F J
FJ
Roy
R C
RC
D018685:Anesthetics, Inhalation / Q000009:adverse effects*; D000932:Antiemetics / Q000008:administration & dosage*; D006801:Humans; D009609:Nitrous Oxide / Q000009:adverse effects*; D010100:Oxygen / Q000008:administration & dosage*; D014839:Vomiting / Q000139:chemically induced* / Q000517:prevention & control*
D018685:Anesthetics, Inhalation; D000932:Antiemetics; D009609:Nitrous Oxide; D010100:Oxygen