BTW, MSDS sheets contain very important information and are a good place to start. Having worked with a lot with MSDS sheets, I can also say that sometimes they really aren't super useful for personal protection purposes.

An example:
Warning! May cause liver, kidney and
heart damage.
Target Organs: Kidneys, heart, central nervous system, liver.
Eye: Causes severe eye irritation. May cause painful sensitization to light. May cause chemical conjunctivitis and corneal
damage.
Skin: Causes moderate skin irritation. May cause cyanosis of the extremities.
Ingestion: May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause systemic toxicity with
acidosis. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness,
drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to
respiratory failure.
Inhalation: Inhalation of high concentrations may cause central nervous system effects characterized by nausea,
headache, dizziness, unconsciousness and coma. Causes respiratory tract irritation. May cause narcotic effects in high
concentration. Vapors may cause dizziness or suffocation.
Chronic: May cause reproductive and fetal effects. Laboratory experiments have resulted in mutagenic effects. Animal
studies have reported the development of tumors. Prolonged exposure may cause liver, kidney, and heart damage.

the chemical? ethanol. okay, ethanol is still a volatile organic solvent but people drink it for crying out loud. and if you didn't know that the above was for ethanol I'd bet that you thought it applied to something a lot worse.

How about his one:
Harmful if swallowed. May cause irritation. Avoid breathing vapors, or dusts. Use with adequate ventilation. Avoid contact with eyes, skin, and clothes. Wash thoroughly after handling. Keep container closed.

the chemical? castor oil. avoid breathing vapors and dust? uhm, yeah.

Personally I find the msds sheets for epoxy leave a lot to be desired. If really concerned, try to get the best ingredient list that you can find and then search safety data on each ingredient. For example, epoxy can have aromatic amines which I suspect contribute to skin sensitization. Another common ingredient (I think) is bisphenol, which has been in the news lately because of health concerns of its use in plastic water bottles. Again, this would be a skin issue or digestion issue. If I had to make a choice, I would be 10X more careful with skin contact as opposed to inhalation.