Fellow Austinite here and new member. This whole experience has made me finally decide to jump into prepping. In my experience plastic containers need to go through a few wash/fill cycles before the plastic taste/smell goes away. The water is probably fine to drink despite the smell. Once this is over and the boil-water notice has lifted, fill them up with water and a few tablespoons of baking soda, shake, and let them sit for a day or two. Then empty them out, wash them, and see if you still get a smell. If so, repeat. Typically 2-3 cycles of this is all it takes. This is normal, don’t go throwing them away just yet!