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No one wants bad breath-when visiting friends and family, during a job interview, especially during the first date
Because most people cannot smell their own breath, they need to ask other people, which can be embarrassing
The researchers mixed sodium chloride (an alkali metal salt) and platinum (a precious metal catalyst) nanoparticles with tungsten, then spun the solution into nanofibers and heated it to convert the tungsten into a metal oxide form
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