Yes, I have washed the news ones many times, soaked them in vinegar for days, soaked them in salt, used sandpaper and pumice--anything I could think of. Nothing works. So I doubt it is a chemical issue. The old shirts weren't worn and washed very much, hence they're still being good shape after all this time. I really think it's the actual cotton fiber that is the culprit.
I tried a Land's End Supima polo which I can manage, but then I tried one of their Supima tees and I can't wear it. I've tried all sorts of modern brands across the board. Maybe organic ringspun (organic farming--unless it's a small family farm--uses chemical pesticides anyway, just fewer)--but these tend to be prohibitively expensive. But I'm tired at this point at wasting money on clothing I can't wear!
Well, one difference between the cotton of the 1980s and now, is that now it is virtually all GMO. So rather than spraying pesticide on the cotton, the cotton plant is engineered to produce pesticide itself and incorporate it into itself. That ain't gonna wash off 👕
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Bt cotton has been genetically modified by the insertion of one or more genes from a common soil bacterium, Bacillus thuringiensis. These genes encode for the production of insecticidal proteins, and thus, genetically transformed plants produce one or more toxins as they grow. "
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Genetically engineered seeds have accounted for the majority of cotton acres since 2000, expanding from 61 percent of acreage that year to 96 percent in 2020 "
It is, of course, supposed to be perfectly safe. Remember that guy from Monsanto or Dow, or whichever, that took DDT pills along with his family to show what confidence he had in the product?
Organic cotton cannot be GMO, so that might be your best bet all around. Though, reality is that many crops are cross-contaminated if the seed crop itself was unintentionally pollinated by GMO pollen. Monsanto, and the like, was in the habit (maybe still is) of suing farmers who had the audacity to grow plants that had been contaminated via wind and bees by pollen from GMO crops. But, yes, organics use "natural" pesticides ... derived from things that some plant or critter (or soil bacterium or mold) used.
If I had to guess, I'd say your issue is the GMO Bt cotton, as it is now almost inescapable, and absolutely did not exist back in the 1980s. Bt pesticide
did exist, but not endemically grown inside the crop itself as with GMO seeds.
Any food crops bother you? Most corn is Bt GMO.