I'm suffering from chronic urticaria since the last few months and on medications like bilastine and montelukast. But, since last one month I'm suffering from respiratory allergies as well. Visited my GP and he found some wheezing in my chest and said its due to urticaria only and prescribed me abphylline. I have noticed that the day I stop taking bilastine the very next day my breathing problem starts and also I get a very weird smoky smell coming from my lungs or nose or throat I'm not sure of, whenever I exhale and also my sputum smells quite weird, also sometimes I find solid like mucus coming from my lungs when I cough but mostly I get very white mucus. Why am I smelling this weird?