The inhaler is a cornerstone in the treatment of asthma, easing symptoms and preventing attacks by delivering medication directly to the lungs. If used correctly, they are incredibly effective at managing asthma. Normal Breathing in, or inhaling involves Contraction of diaphragm that leads to extent chest cavity air enters through the nostrils into lungs, here dust and dirt particles get trapped into nasal hair allowing purified air to get in, where as in asthmatic breathing, contraction of diaphragm occurs and chest cavity expands but airways get narrow due to inflammation, mucus, and bronchospasm and air struggles to get in. It is very important to manage such condition and it may can affect overall oxygen mechanism.