Take moldy buds and microwave them for 15 seconds intervals about 5 times a day...over several days...if you insist on smoking them.

And, if you do smoke them, use only a water bong.

But, you MUST isolate them.

As for your yeild...yea, its low but it all depends on how long you vegged, the strain and the power of light you used when flowering. Under proper scenarios, you should get at least 6 ounces per plant...up to 12.

Sounds like a lighting problem..or you didnt veg long enuff.