thanks for asking your question i completely understand your situation it depends according to the amount and duration of exposure cement exposure can cause permanent changes in lungs like fibrosis or interstitial lung disease if the exposure is for a long period of time and continous but if exposure is just once that can cause an allergic inflammation and will resove with in a week or two. so dont panic and consult a pulmonologist , he ll guide you through the process of treatment which will be a short course of antibiotics like cefexime for 7 days and a leukotreine inhibitor like monteleukast for couple of days for this allergy. thanks/ regards feel free to ask more questions may god bless you with good health