I am not even sure if that's a serious question. How did you filter it? 220nm micron filter? Cigarette bud? Tea strainer? Pasta strainer?
If it was a 220nm micron filter that you used I am afraid I can not explain what happened. There are a lot of compounds in plants that you might show allergic reactions to. Pollen from other plants, all types of bodily fluids from animals of all sizes, probably upwards of 1000 macromolecules and microorganisms (and even virii). There is really no telling what caused the reaction. Could be an allergy, could be flesh eating bacteria, could just be a perfectly healthy reaction to whatever contaminants entered your soft tissue.
I've shot a lot of things I probably shouldn't have been shooting, but always got away with it somehow.
Lost a few veins and had an abcess or two, but I'm alive.
I really hope you are alive as well and won't even think of repeating this. You are playing Russian Roulette when injecting raw extracts of living plant matter.
Just eat the damn pods. I prefer eating opium as well. Shot large doses of hydromorphone and heroin and ate, plugged and snorted countless others, but nothing comes close to the high of opium if you ask me.
It's a standout opiate. Just eat it. Eat the entire pods, make tea of them and drink that, it really doesn't matter. But godamn dude, stop shooting plant extracts!!!! For the sake of everyone who knows and loves you.
Regarding your idea to shoot heroin. Probably best not to do it if you are into opiates. The stories are real. It isn't the least bit addictive for me personally, since I plain don't like it's effects. The rush is absolutely laughable compared to some other drugs.
If you want an opiate rush so badly there are better options that will feel much more intense. Hydromorphone or Oxymorphone for example.
But you should honestly reconsider. If you are after an intense rush, one that will actually blow your fucking socks off, read up on shooting MDMA. It's the tits!! Absolute endgame, while shooting heroin is child's play. MDMA not being particularly addictive is an added bonus. Never met anybody who sold his soul for it.
I wrote a lot more, but accidentally deleted the post.