baking soda doesn\'t seem to yellow, however, if you\'re like me and dig a box of it out of the far back of the refrigerator after it\'s been there years, it may definately have a fun oder that will linger with the mini...I have one that is definately my stinky mini.
As for techstar snow, the stuff kills I swear, I inhaled some accidentally when I first got it and I seriously thought my lungs were going to die. They\'re like tiny spikey balls of death!