Mayo, that suit is funny! It's exactly what my husband needs. I swear he breaks out in a horrible rash, just from walking past poison ivy. I'm not allergic, but he didn't believe me. I finally rubbed some on my arm two weeks ago, and nothing happened, just as expected. I'm a fool for proving my point. I'm now in charge of all poison ivy removal on our property.
Juli, if you touched the plant with bare hands before spraying, or when bending it over, and didn't get a rash, I'd say that you aren't allergic. Every part of the plant has the oil, so just touching the roots can cause a rash. Like everyone suggested, protection is the key, and wearing long rubber gloves is your best bet. I'd also suggest eye protection. Wouldn't want to get any of that oil in your eyes.