Play particle system with GetKeyDown

Hello, is there any way to make a particle system start playing when I press for example, H key on the keyboard? The thing that I’m creating is a health system and I when the user press H he uses his heal potion. How can I make when the user press H play the particle system at the same time?

Thanks, any help is appriacted!

Just put into Update method check for input button like this:

void Update()
{
   if (Input.GetKeyDown ("h"))
   {
       //do your visual effect
   }
}