x4, .5g joints Chemdawg #4, officially known as "Chemdog 4," but also "Chemdog #4," and "Chem 4" is a hybrid marijuana strain. Part of the prominent line of Chemdog strains, Chemdawg #4 is known to deliver a balance of cerebral invigoration alongside relaxed full-body effects. Its smell has been likened to citrus or even Pine-Sol, with a lemon flavor.