What happens if a bottle does get through the inspection process?

This aspect has been researched intensively and a variety of substances likely to be incorrectly stored in bottles was studied independently in simulated real situations.  Very stringent testing showed that only small fractions of some compounds were actually absorbed.  Subsequent tests, with simulated beverages spiked with 52 chemicals passing through the visual and instrumental inspections, showed 17 of the chemicals could not be detected and those that were found were detected at levels well below those considered safe for public health concerns.