関連ワード:  is it safe to sleep with ear buds in    is it safe to sleep with ear plugs in    is it ok to sleep with ear buds in    is it okay to sleep with earbuds in    is it ok to sleep with ear plugs in    is it dangerous to sleep with ear plugs in    is it bad to sleep with ear buds in    is it safe to sleep with wireless earbuds in    is it safe to sleep with bluetooth earbuds in    is it safe to sleep with earphones in