If u didnt open the solution bottle and it is sealed then u can take it in emergency. It sounds though u are suffering from acute bronchitis and need nebulisation immediatly. Since u are obese u need to sleep with ur head raised at a higher level so that ur respiratory tract pathway is clear and u can breathe easy Try to take early morning walks regularly and take high protein foods like egg whites or lean meats and chicken without skin and moderate amounts of carbs. This will directly stimulate ur immune system and decrease recurrent attacks of bronchitis. Avoid all heavy and fat foods.