Short answer: No, yes but harmless at the concentrations used, no, too vague, yes but harmless, not anymore (mostly) and harmless anyway, tiny amounts and harmless, no.
Long version:
Chicken embryos: used as a culture medium, not an ingredient.
Embalming fluid: some vaccines do contain trace amounts of formaldehyde, it's used in the manufacture process to inactivate bacterial toxins so you don't get sick from them (and to prevent contamination). Evil, isn't it?
Spermicide: Some vaccines contain octoxynol-10, but the only sources claiming it's a spermicide are anti-vaxxers. Presumably confusing it with octoxynol-9. Not that injecting people with spermicide on a few occasions in their life will accomplish any sort of eugenistic population reduction, because, y'know, we can make more of it. Every day.
Cancer-causing agents: A claim so broad as to be meaningless. As the
Daily Mail has taught us, roughly 50% of everything has been at some point accused of causing cancer.
Gelatin from butchered animals: I'm pretty sure all gelatin comes from animals. Does butchering them somehow add particulates of evil to it? Or is the gelatin itself you object to, in which case do you also oppose yoghurt, jello and ice-cream?
Mercury: Most vaccines no longer contain thiomersal, but anyway there's no evidence it has any negative effects.
Antibiotics: ...so you're a fan of bacterial infections? Some vaccines contain tiny amounts of anitbiotics, used in their manufacture for purposes similar to formaldehyde.
Anti-freeze: Polyethylene glycol (which some vaccines have) is not the same thing as ethylene glycol, AKA anti-freeze (which no vaccines have).
The worst part? These people like to show off how they do their research before putting evil life-saving chemicals in their kids' bodies, but it took my like half a minute of googling to find out why each of these "poisons" is harmless and there for a good reason, or not there at all.
