Nebulisers are machines that turn the liquid form of your short-acting bronchodilator medicines into a fine mist, like an aerosol. You breathe this in with a face mask or a mouthpiece. Nebulisers are no more effective than normal inhalers. However, they are extremely useful in people who are very tired (fatigued) with their breathing, or in people who are very breathless. Nebulisers are used mainly in hospital for severe attacks of asthma when large doses of inhaled medicines are needed. They are used less commonly than in the past, as modern spacer devices are usually just as good as nebulisers for giving large doses of inhaled medicines. You do not need any co-ordination to use a nebuliser - you just breathe in and out, and you will breathe in the medicine.
If you've got a cough (wet or dry) that has lasted eight weeks or longer, you could be suffering from chronic postnasal drip—mucus that accumulates in the sinuses and drips down the back of the throat, creating a tickling sensation that triggers a cough. There's no test for postnasal drip, says Dr. Frank, but you may also have a runny nose or congestion (from allergies or lingering cold symptoms, for example). Other signs include frequent throat clearing and a sore throat. Because it's so common, doctors will often try treating it even if they're not sure of a diagnosis, says Dr. Frank.