>>518654583
>with the kitchen that close to the bathroom--and especially with the toilet *right* there--you're going to get some smell wafting out
You won't.
I lived for months and my grandparents lived for decades in **similar**setup in much larger apartment in commieblock (main bathroom, 5 cm thick wall, toilet with place for toilet only, 5 cm wall, kitchen, so there is only one shaft needed) and smell was never an issue. Just close the door and if both rooms have different ventilation routes it will work. It was popular floor plan around 1970s
Pic rel in top left you have kitchen, WC and bathroom.