Poor air quality, which can be influenced by a variety of fumes, chemicals and allergens, is arguably the leading cause of triggers for most asthmatics in urban areas. ↗
Sometimes I write them down in musical notation as a trigger to remind me about certain directions to go. Or I can be specific about a sound I'm looking for. ↗
I've just taught thousands of people over the radio in the USA how to mend broken watches and broken house appliances. I am a catalyst or trigger to access these powers. ↗