Quoted:
No to shooting.
Both lead and noise.
Emory
Lead is not a danger at an outdoor shooting range with soft targets and an earth backstop.
Since the universal implementation of lead free primers, the only danger is atomization of lead particles when shooting steel targets or a steel backstop (such as on an indoor range). There is also a minor exposure due to unjacketed or traditionally jacketed (exposed base) bullets at high velocities and high chamber pressures, which will melt and expel some lead off the base of the bullet. Same for unjacketed bullets in revolvers, some small amounts will escape out past the forcing cone. As any reloader will tell you, though, high pressure loads with unjacketed bullets tend to be inaccurate and there's not really a reason to shoot them except for strict historical accuracy - and even older cartridges often used gas checks on bullets for exactly that reason. Plus it leads up your barrel like crazy.
Elemental lead is not dangerous. It is inert and cannot enter the bloodstream. It is ionized lead in lead-containing compounds that is the danger. Ingesting lead can create some small amounts of lead acetate when it mixes with gastric acid in the stomach, which is why you're not allowed to eat or drink on ranges. Some ranges even go so far as to ban Chapstick and gum, though I think that might be going a little too far.
Don't be afraid of lead. Just take some simple precautions when you're in an environment that could lead to exposure. An open pasture with a .22LR is not one of those situations.
ETA: And gun oil isn't going to hurt anybody either. Even 3-in-1 or CLP is just lubricant with about 20% detergent in it - it can't hurt you by skin contact or particulate inhalation. Solvents (i.e. Sweet's 7.62 or other copper solvents), of course, DO pose a danger but they're generally used sparingly and should be removed from the gun after cleaning. A shooter who doesn't clean the gun should never come into contact with solvents anyhow.
I know the natural male response is to be overprotective of women who are with child. It's a completely healthy attitude. But there's no sense in overstating risks.
Small ammounts of caffeine or alcohol are fine (say, 50mg caffeine and 1/4 floz ethanol per day), even though many women avoid both completely.
Shooting is OK as long as you choose a low-report weapon and don't shoot indoors or at steel targets at close range.
There's a line to be drawn between prudent safety measures and full-blown paranoia.