'How could she simply go to sleep and never wake up?': Heartbroken parents of former Olympic swimmer who launched new career as a headteacher say they 'cannot comprehend' after she dies suddenly aged 42. #DiedSuddenly #VaccineInjuries https://www.dailymail.co.uk/news/article-12412043/Parents-Olympic-swimmer-Helen-Smart-comprehend-death-43.html?ito=native_share_article-nativemenubutton