I honestly do not know about the shared dresser. I would imagine that as long as you wash ur hands to avoid cross contamination you would be ok. I am not aware of any airborne pathogens shared between frogs and snakes. However I bet that snake sits all day thinking about what he would do if he ever got out of his tank and into little froggy #1's.. lol !
I would get a lamp like this
Exo Terra Repti Glo 5.0 Tropical Terrarium Lamp 18 inches (15 Watt) | Josh's Frogs. Make sure you turn it off at night. If you are not already, make sure you mist the cage once a day. You can buy a mister at any beauty supply for a dollar or two.
I would change the substrate, any water and clean any decorations/water bowl with boiling HOT water. Obviously Lysol will kill your remaining happy hoppy. Make sure you're dechlorinating the fresh water as well. I even dechlorinate the water I boil Treemone's decorations in although it is prob not necessary.
Hope this helps! Have you named froggy #1 yet ?