Anyone who works in the oil and gas industry or in waste water treatment plants is well aware of hydrogen sulfide (H2S) - a colorless, poisonous and explosive gas with a characteristic unpleasant smell of rotten eggs.
Even in small concentrations, it irritates the mucous membranes of the eyes, throat, provokes a headache and even leads to a disorder of the vestibular apparatus. At a higher concentration of it (more than 1000/1000 000), people lose consciousness and may even die.
In areas where H2S is produced, personnel are equipped with special gas detection devices. Now the Swiss watchmaker North Eagles has decided to install the same sensor on its new watch. When a certain concentration of hydrogen sulfide is detected, they begin to vibrate, flash and give alarms with a power of 96 dB. If the watch is "tied" to a smartphone, then a notification is sent to the emergency team about the location of the gas leak.