Complex sentence: While at her house, Peter (Joshua Jackson) observes obsessive compulsive germaphobe characteristics such as large quantities of hand sanitizer, and Walter tells him the worm has a medicinal purpose, not a narcotic one as they previously believed.
Split into simpler sentences: While at her house, Peter (Joshua Jackson) observes signs of obsessive compulsive and germaphobe characteristics such as large quantities of hand sanitizer. Walter informs him the worm has a medicinal purpose, not a narcotic one as they previously believed.