My son has infantile asthma and he is four years old .. he had two attacks and was taken care at al sadd emergency centre.
Things which we take care are
1. No carpets (either use linoleums or tiled flooring).
keep ur home dust free, vaccum ur sofas once a week atleast.
2. Dont take ur child out on a dusty day.(WE cant keep them tied at home always but can avoid any travel on windy days).
3. always carry ventolin inhaler along with you.
4. During the weather transition stage of weather like from summer to winter or winter to summer .. extra precaution should be taken and should consult the doctor, we r asked to give singular 4mg sachets daily night for a period of three months during these transition. Singular is a anti allergic and anti asthmatic drug.
month of September and month of April we gotta take taht extra care.
5.As a controller we r giving flixotide inhaler daily night one puff.
6. Dont ever neglect common cold which continues for a longer duration than a week. We have faced the diff of that turning out into pnuemonia . Ask for a throat swab before giving antibiotics cos our child was tried with three differnt kinds of antibiotic week after week and finally got him admitted when the severity increased.

Well if u take necessary precautions i dont think there is any hassle in bringing ur kid.