Without even realising, you could be exposing yourself to plastic laden with harmful flame retardants.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/even-your-clean-plastic-may-be-laced-toxic-elements
[2] http://admin.indiaenvironmentportal.org.in/category/author/jasjeev-gandhiok
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/plastics
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-recycling
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/toxics-link
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/toxic-wastes
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hazardous-waste