Each person is different but I recently discovered that my respiratory and asthma issues were set off by eating foods from the night shade family. (tomatoes, potatoes, eggplant, peppers, etc. - you can print out a list). We found this purely by accident. I had a lot of blood work testing and it revealed my intolerance of these vegetables. After going completely off them I discovered my daily hack and wheezing disappeared. I also have not had my normal spring and fall allergy issues. If I eat something that has any of these items in them, or having had touched them I go back to hacking and wheezing. After all of the allergy testing done in the past where it did not show anything other than a slight reaction to tomatoes and years of suffering I am at last breathing easier and have not used my inhaler or meds for 2 years. Of course, I have learned to be VERY vigilant. As much as I long for a slice of pizza (also GF but you can get GF crusts) with tomato sauce I know that I would be paying the price.

I don't know if eliminating these foods would help you as well, but what the heck, I'd try it for a month and if there is no difference - try something else. At this point my attitude is "Food is just food" and if I have to give up something forever to feel healthier it is no big deal. I have gone to parties where I ate nothing, but I was there to share the friendship and fun. I just make sure to eat before I go to dinners or parties and/or bring dishes to share that I can safely eat.

Good luck!

Stay away from sulfites, that sets me off badly enough that it takes weeks to get it back under control. Watch packaged tortillas, dried fruits, sweetened coconut flakes, frozen or packaged potatoes, onion soup mixes, and bottled lemon or lime juices specifically. Those usually have added sulfites. Natural sulfites may or may not affect you depending on your threshold but I have had to eliminate wine (oh the sadness), shrimp, and grapes. Onions don't bother me. I personally also am set off by heavy dairy....I am not allergic but milk, ice cream,full fat cream cheese,and heavy cream really cause breathing problems. On a daily basis, I use earth balance for butter needs and exclusively use almond milk in place of milk needs, even in coffee. I developed this problem specifically last January at the age of 53. Kind of like the chicken and the egg as we don't know whether the asthma caused the sulfite problem or sulfites caused the asthma. It's bad enough to cause serious limitations and I have to watch everything.

It's depends on what type of asthma you've got, with me I've been diagnosed with a Stress-Induced Asthma

I don't know what the overall answer would be, but in my case staying away from my allergies prevents some of the asthma. If I consume too much wheat or dairy I will have an asthma flare-up. I'm not really allergic to them. I guess you could say I am sensitive to them. The quantity makes a difference.

I find eating or drinking dairy makes my asthma far worse no matter what time of year it is. I avoid it when I'm unwell and have small amounts of lactose free or soy milk when I'm well