edited to add question.
I'm planning on using a Frontier Pro + bleach drops to purify my water. However, I camp in the Sierras's. You're supposed to keep everything with an odor in your bear cannister (where required) or in a bear bag away from your campsite. Bleach has an odor, so my playtpus will smell like bleach. Not only do I want to use it as a pillow, but it wouldn't fit in my bear can (unless I emptied it, and then had no water to start my morning). I could hang it, but that involves bringing more rope and is technically against the rules where cannisters are required.
Am I being overly cautious, or could this actually be a problem?
Do pur tabs have a scent?