so i recently bought a juicer and decided to make some hard cider with freshly juiced apples, and pears. i juiced a gallon of apple juice and a gallon of pear juice. i didnt think to filter, but next time i most deffinately will. after i got the juice i added 1 crushed campden to each jug and let it sit 24 hours. i then pitched rehydrated notthingham. the next day i noticed both of them stunk horribly of sulfur and its been about 2 weeks now and it still persists, i thought that it should have gone away by now but it hasnt. what is the reason behind this stench?