This "Canned Radiation" produced by Brenster Enterprises in 1980 was probably the most popular souvenir from the Three Mile Island nuclear incident.
Amongst the six suggested uses listed on the label is this one:
4. Instant male sterilization (sniff twice daily).
4. Instant sterilization (store at crotch level)
If you have to sniff twice daily, it isn't terribly "instant", is it? Not to mention it's silly to limit it to men. Perhaps:
4. Instant sterilization (store at crotch level)