How to detect a gas leak?

The surest way for such a good cause as detecting a gas leak, only in this case it is not necessary to detect it, the smell is revealed by itself, this is by smell. But, there are situations when a person cannot identify such a “nuisance” by smell. A person has a bad sense of smell, and, after staying in a room for a long time without going out into the fresh air, the olfactory receptors are not so sensitive to various kinds of smells and you can simply not notice this not strong, in general, smell, but especially when something is being prepared – very aromatic. To determine by smell, it is advisable to go out into the fresh air and re-enter the room. And the most correct way – gas structures are smeared with soapy foam and bubbling-bubbling in one of the places of the structure indicates a leak.