Add sulfites to the list of allergies

REGARDING “From Soap to Nuts, Allergies Can Make Any Trip a Challenge,” Travel Insider, Jan. 7: My daughter is allergic to sulfites, which are a preservative used in many frozen foods, snacks and salad dressings. Wine is the biggest offender. It has natural sulfites that cannot be removed or it would not be wine.

We always let the airlines, cruise ships and restaurants know, and they are very nice about it. Sulfites will kill her.

SALLY RICHARDSON

Tustin