From the issues started, Covid-19, human beings are wearing a mask for safeguards. Coronavirus is a virus from a large family that causes illness. A severe spreading of Covid-19 pandemic situation, we have been using Personal Protective Equipment (PPE) like mask and respirators massively and littering the used masks and respirators becomes a huge problem such as pollutions, becoming a Covid-19 gateway, and hurting animals. We are frequently using masks and respirators for protecting the spreading of Covid-19. After one year is over of the Covid-19 pandemic situation, most of the people are not stopping to wear masks and respirators. The second wave of Coronavirus is now started and its malignancy is high than the previous Covid-19. India has launched the program of Covid-19 vaccination and it is compulsory for 40 and above age groups. The second wave of Coranavirus affects even a vaccinated person. It spreads very quickly to the people compare to the spreads of Covid-19 and its symptoms are different. Reducing the spread of Covid-19 and its second wave, the World Health Organization insisted to wear a mask. Wearing a mask is a safety measure for Covid-19 and its second wave, but nobody can take care of the huge stagnation of used masks. The increase of masks usage is directly proportional to the individual. The garbage of used mask seriously affects domestic and wild animals, and become a headache to remove the heap of masks. This article describes the adverse consequences of used Covid-19 masks.