I'm almost immune to Cell Yell, but sometimes it gets just a bit too obnoxious. I usually commute with my husband, so when it gets unbearable, we just start to have a conversation at the same decible level about the most obnoxious topics we can think of (he just follows my lead). It's about 90 percent effective in getting the Yeller to move away. The other 10 percent of the time, they are either deaf or just too darned rude/oblivious.