(Threads in the devices category are generally limited to one device class, so I’ve moved this to projects so you can get all your answers together.)
Both these topics have been much discussed in the forums. There are no PIR motion sensors specifically for outdoor use because temperature fluctuations, even those caused by a cloud passing over the sun, create too many false alarms. In fact the Aeon sensor itself recommends disabling the motion detection before using it outdoors as a temperature or light sensor. More discussion in the following topic (this is a clickable link):
People have gotten some good results with a sensor in a sheltered location, both the Fibaro and the Aeon, but it just depends on your exact setup.
Another alternative to handle false alerts is to use @Mike_Maxwell 's excellent zone detection smartapp which requires positive on multiple sensors to go off before reporting.
As far as smoke detectors go, see the following thread:
Another alternative is to get one of the audio detectors which recognize smoke alarms and can then send a notification. Since that notification could be sent to IFTTT, that gives you indirect integration. I believe Both the Kidde RemoteLync and the Leeo can do this. This type of set up works with any existing smoke detector, because in the US smoke detectors have to use a specific acoustic pattern. So the notifier device just listens for that pattern, then sends the notification.