The coronavirus crisis has brought the enormous potential of nanotechnology to the fore with nano sanitizers, nano sprays and nano-facemasks selling like never before. However some parents are now pointing out the possible long-term side effects, cutting across the general enthusiasm for all things “nano”. These days a sanitizer is one’s best friend and within widespread measures to prevent the spread of Covid-19 twenty-eight kindergartens in Ostrava had their premises nano-sprayed. One of the mums who learned about it later, says she felt angry and helpless about not being consulted in advance. “This is an area that has not been adequately explored. We do not know what effects nano particles may have on young, sensitive individuals in ten, twenty years’ time. As I mother I see this as a potential risk – and I don’t like it at all. “