Last post I covered some possible benefits of dinning on dragons. Dinning on something as dangerous as a dragon may not the the safest of prospects, the following are some possible risks and dangers (not all of which need be present in all campaigns or all dragons).
Dragon Blood is caustic. While it may be possible to drink or bathe in dragon blood it is a dangerous liquid that must be neutralized before eaten or bathed in by mortals. Anyone foolish enough to bathe in dragon blood will begin to take 1hp per dragon HD in acid damage after the first 5 minutes. Anyone foolish enough to drink it will suffer 1d6 damage per dragon HD.
Dragon Flesh is Littered with Bone. Dragon flesh is edible but he flesh is packed with a huge variety of boen spurs and splints that enhance the dragons muscular abilities but will cut the uncareful that eat dragon meat. Eatign poorly prepared dragon flesh will inflict 1-3 hp of damage on the uncareful and if a whole portion is consumed the damage to their intestines will prove lethal within 3 days if a save vs death is failed.
Dragons are full of parasites. Dragon flesh organs and blood are contaminated by a host of parasites. If not properly cooked these parasites will get into the victims bloodstream and slowly distribute throughout the body and begin to bore into flesh and bone causing those contaminated by the parasites to lose 1 point each of Dexterity and Strength each day for 2-7 days. Rumors of claim more immediately dangerous dragon parasites exist.
The Gold Bug. This is a parasite or perhaps the spirit of the dragon. One who dines on the flesh of a dragon may find themselves compelled to rebuild the dragon’s hoard. A PC so afflicted will not be able to gain experience points due to the distraction until they reassemble the entire hoard. A remove curse spell will only put off the process for a week at best.
Dragon-dinning Stink. Eating dragon flesh leaves the gourmand with a stench that takes 13 years to wear off. The stench is almost impossible to notice to normal folk but the draconic species will note it easily (within 100 feet per HD of dragon eaten). The stench of a dragon eater will cause even the most benevolent of dragons to react with an increased degree of hostility (at least one degree less favorable on reactions). Dragons as the same type that was eaten will know and react with rage gaining +2 to attacks against the eater of dragons.
The Heart of the Dragon. Rumors abound of much power begin gained by one who dines upon the hearts of dragons and it is mostly true, one who consumes 7 dragon hearts of the same species of dragon will fall into a deep sleep for as many years as Hit Dice of the dragon (they are safe from starvation, dehydration, and normal temperatures while so sleeping) and during the last year grow a dragon-egg like cocoon from which they will emerge as either a half dragon or dragon. Sounds great to some but the years of imposed hibernation are not conducive to a successful adventure career while so asleep and a DM is free to declare when such a sleeper emerges from the cocoon they are now an NPC monster.