Sulfa Allergies vs. Sulfite Allergies

https://www.healthline.com/health/allergies/sulfa-sulfite#overview1

“Because their names are similar, people often confuse sulfa with sulfites. Sulfites occur naturally in most wines. They’re also used as a preservative in other foods. Sulfites and sulfa medications are chemically unrelated, but they can both cause allergic reactions in people.“