I own a house so I got lots of freedom to move my plants around if need be and I would like to contain the smell at least in the room that the plants are located inWhere are you growing? Apartment, condo, house? How much do you want to contain the smell?
Honestly though, with just 2 plants I wouldn't worry much about the smell while it is growing.
When its drying and curing, i'd say otherwise.
If you let me know what your working with I can help you out a little more.
I have heard good things about the spray, the gel is just as good? I ordered the gel off ebay and the spray so I hope it comes in the mail soonstart with a jar of ONA gel, about $10 at hydro store.